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Andre
Asked: 2013-03-10 12:44:25 +0800 CST

How to remove Kernel/LTS Enablement Stack?

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this question regarding the LTS Enablement Stack has actually two parts:

  1. I installed Linux 3.5.0-x on Precise 64bit via sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal . As it turns out, VirtualBox does not work yet on the new kernel (EDIT: This is fixed now.). Therefore I want to remove it from the system. As expected removing the meta-packages via sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal is not enough. What packages do I need to remove manually? For the kernel I would do (as of now): sudo apt-get remove linux-image-3.5.0-25-generic . However, regarding xserver-org I am lost. How can I switch back to the original xserver?
  2. I installed a system with the 12.04.2 installation media. There I have also the 3.5.0-x kernel, because that's the default for this point release. How can I downgrade to the kernel (and xserver?) to the 3.2.0-x series?

Thank you!

12.04

3 Answers

  1. Best Answer

    Important: The below instructions only work if you have one of the pre-enablement stack kernels installed still, e.g. 3.2.0-38.

    With the Enablement Stack installed run 'uname -r' to check the current kernel version. Substitute it into the command below:

    sudo apt-get purge linux-generic-lts-quantal xserver-xorg-lts-quantal linux-headers-generic-lts-quantal linux-image-generic-lts-quantal linux-image-3.5.0-25-generic linux-headers-3.5.0-25

    Re-install important components (including X itself!) that are removed due to dependencies by the above commands:

    sudo apt-get install xserver-xorg xserver-xorg-input-synaptics

    Fix the steam client:

    sudo apt-get install libgl1-mesa-glx:i386

    Finally, reboot your computer.

    IMHO the enablement stack isn't ready for release. In my experience Virtualbox, Samba, and the Steam client all break with the Enablement Stack installed. There's a workaround for Virtualbox but none for Samba or Steam so far (March 2013).

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  2. In Trusty/14.04 there are a few more packages that need to be removed, or apt-get will complain.

    sudo apt-get remove linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic

    Then install xserver-xorg if not installed, reboot to old kernel version, remove 3.16 kernel(s) and you are good to go.

    If you use Steam, you need to install two packages:

    sudo apt-get install libgl1-mesa-dri:i386 libgl1-mesa-glx:i386
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  3. A procedure for your consideration:

    1. Uninstall the following packages:

      linux-generic-lts-quantal
xserver-xorg-lts-quantal

    2. Install the following packages:

      linux-generic
linux-headers-generic
linux-image
linux-image-generic
linux-libc-dev
linux-tools

    3. Reboot to 3.2.0-38 kernel

    4. Uninstall the packages linux-headers-3.5.0-x and linux-image-3.5.0-x.

    Good luck and have fun.

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